Kwai Chung Expressway (Chinese: 葵涌道; pinyin: Kuíchōng Dào; Cantonese Yale: kwai4 chung1 dou6) is a throughway in Kwai Chung of the New Territories in Hong Kong. It is one of the busiest roads in Hong Kong. The Transport Department has classified it as a trunk road.
It was built in the 1960s for the two main development projects in Hong Kong, one for the Tsuen Wan New Town, another for the Kwai Chung Container Port. The road replaces the Castle Peak Road as the main connection between Tsuen Wan and Kowloon. It hosts most public bus routes from Tsuen Wan, Kwai Chung and Tsing Yi to Kowloon and vice versa. There are about one hundred bus routes using this road.
The road starts from a junction with Cheung Sha Wan Road, Lai Chi Kok Road and Butterfly Valley Road in Cheung Sha Wan, via Kwai Chung Road Flyover in Mei Foo, Lai Chi Kok Bridge, Chung Kwai Chung, and ends at a junction with Castle Peak Road and Cheung Wing Road in Sheung Kwai Chung. It has served the new town of Kwai Chung on the reclamation of Lap Sap Wan, and also the Kwai Chung Container Terminals.